The section describes Poisson Solver routines for the Cartesian case, their syntax, parameters, and return values. All flavors of the same routine are described together: single- and double-precision and 2D and 3D.
Some of the routine parameters are used only in the 3D Fast Helmholtz Solver.
Poisson Solver routines call
FFT routines (described inFFT Functions), which enhance performance of the Poisson Solver routines.
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